Filter.



No. 692,377. Patented fm1; 4, |902,

|. N. sPeEn.

FILTER.,

(Application Bled May 15, 1901.)

(No Model.)

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flllll lllmmiV//y A A 7 /lsl VEA/70H UNiinn STATES ATENT OFFICE.

ISAAC N. SPEER, OF S'l. LOUIS, MISSOURI.

FILTER.

SPECIFICATION forming' part of Letters Patent N o. 692,377, datedFebruary 4, 1902.

Application tiled May l5, 1901.

T0 all whom t may concern;

Be it known that I, ISAAC N. SPEER, a citizen of the United States,residing at St. Louis, Missouri, have invented a new -and useful Filter,of which the following Ais a specificat1on.

My invention relates to that class of filters which are adapted to beattached directly to a water-supply pipe and receive the water underpressure and to that class of filters in which the filtering-body isadapted to be readily removed from the case, cleaned, and replaced inthe case; and my invention consists of the novel features herein shown,described, and claimed.

Figure 1 is a vertical central section of a filter constructed inaccordance with the principles of my invention and taken on the line 1 1of Fig. 3. Fig. 2 is a top plan of the filter with the discharge-piperemoved. Fig. 3 is a View analogous to Fig. 2 with the filtering-bodyremoved.

Referring to the drawings in detail, the case 5 is a hollow cylinder,wide open at its upper end and normally closed at its lower end, theonly openings in the lower end being the drain-cock and the supply-pipeconnection, and these openings may be in the side or at any point tocommunicate with the muddywater chamber, and both the drain-cock and thesupply pipe are normally closed. An enlargement 6 is formed at the upperend of the case 5, and an internal annular groove 7 is formed in thisenlargement. The two entrances S lead from the upperend of the case tothe groove 7 and at opposite sides of the center of the case. Thatportion of the bore 9 of the case which is above the groove 7 isenlarged slightly, and shoulder 1U, which is below the groove, isrounded, thus making an enlarged and tapered entrance to the case. Adrain-cock 11 leads from the lower end of the case, and a supply-pipemay be screwed into the opening 12 at the lower end of the case.

The cap-plate 13 is adapted to pass into the entrance of the case andfit closely at a point below the shoulder. A hub or boss 14 extendsdownwardly from the center of the capplate, a rubber gasket 15 is placedin position against the lower face of the cap-plate with the hubextending through the gasket,

Serial No.60,306. (No model.)

and a flange 1G extends downwardly and outwardly from the periphery ofthe gasket. The filtering body or stone 17, of tripoli or other suitablematerial, is cylindrical, fits loosely within the case, and has acentral bore 1S, extending from end to end. The stone 17 is placed inposition against the lower face of the gasket with the hub extendinginto the bore 1S. An opening 19 is formed through the center of` thecap-plate and hub and the nipple 20, which extends upwardly from thecap-plate. The tie-rod 21 is inserted loosely into the opening 19 andsecured in position by the pin 22, inserted through the hub and looselythrough the tie-rod, as required to form a universal joint. It sometimeshappens `that the ends of the filteringbody are not at right angles tothe peripheral surface, and then this swinging motion of the tie-rod isimportant, because the rod will adjust itself to the angle of the end ofthe stone. The tierod extends downwardly through the bore of the stoneto a point below the lower end of the stone, a rubber washer 23 isplaced on the tie-rod against the lower end of the stone, a metal washer24 is placed against the rubber washer, and a nut 25 holds the metalwasher in position to close the lower end of the bore of the stone. Theopening through the metal washer is enlarged at the lower side, and arubber washer 2G is placed in this enlargement and is heldin place bythe plate 27. The clamping-lugs 28 extend upwardly and outwardly fromthe cap-plate to engage in the groove to suspend the filtering-body inthe case, and the lugs pass into and out of the groove through theentrances. The discharge-pipe 29 is attached to the nipple 20.

The inner face of the rubber flange 16 'is beveled, so that there is awide wedge-shaped space between the fiange and the outer surface of thestone, while the outer surface of the flange is adapted to fit tightlyagainst the inner surface of the case, as required to form a water-tightjoint between the upper end of the stone and the case. As beforesuggested, the stone is suspended in the case. When the faucet or thestop-cock of the supply-pipe is open,water will pass into the casethrough the opening 12 and pass upwardly around the' stone to the fiange16 and into the space be- IOO tween the flange and the stone, andthepressure of the water will press the flange outwardly against the innerface ot' the case.4

The continued pressure of the water will cause it to filter through thestone to the bore 18 and pass upwardly and outwardly through thesupply-pipe 29. The mud will gather on the vouter surface of the stone,and when it is descrubbed and cleaned. When out of the case,

the flanges 16 may spread slightly, thus making it advisable to slightlyenlarge the entrance to the case and provide the rounded shoulder 10.When the stone is returned to the case, the edge of the flange 1G willpass into the enlarged upper end of' the bore 9 and against the shoulder10, and by the inclined surface of said shoulder the edge of the flangewill be contracted or deflected inwardly and then pass downwardlytightly into the case. The lugs 28 will pass into the entrances 8 andthen into the groove 27. It is not necessary that the supply-pipe beattached to the lower end of the case. It may be attached at any pointbelow the gasket.

The drain-cock serves as a vent to let the air out of the cylinder whenthe filtering-body is inserted and also as a means of letting the muddywater out of the cylinder, andsince the water comes to the cylinderunder pressure the drain-cock may be attached to the side of thecylinder or at any point to communicate with the muddy-water chamber.

I claim- 1. In a filter, a cylindrical case open at one end, there beingan internal annular groove at the open end of said case and entrances tosaid groove, a cap-plate adapted to close the end of said case, a gasketagainst the lower face of the cap-plate, a flange extending from saidgasket, a filtering-body against said gasket and within said flange, andlugs extending from saidv cap-plate to engage in said groove and pass inand out through the said entrances, substantially as specified.

2. In a filter, a cylindrical case open at one end, there being aninternal annular groove at the open end and entrances to said groove themain entrance to the case being enlarged outside the groove, and therevbeing an inclined surface or shoulder below the groove, a cap-plateadapted to close the end of said case, a gasket against the lower faceof the cap-plate,a flange extending from said gasket,

a filtering-body against said gasket and within said flange and lugsextending from said cap-plate to engage in said groove and pass in andout through the said entrances, substantially as specified.

3. In a filter, a cylindrical case open at one end, there being aninternal annular groove at the open end and entrances to said groove,the main entrance to the case being enlarged outside of the groove, andvthere being an inclined surface or vshoulder below the groove, and afiltering-body adapted to have lugs engage in said groove and acompressible gasket to pass beyond the'inclined shoulder, substantiallyas specified. A

4. In a filter, a cylindrical case open at one end, there being aninternal annular groove at the open end of said case and entrances tosaid groove, a cap-plate adapted to close the end of said case, a gasketagainst the lower face of the cap-plate, a flange extending from saidgasket, a filtering-body against said gasket and within said flange, andlugs extending from said cap-plate to engage in said groove and pass inand out through the said entrances, a supply-pipe communicating with themuddy-water chamber and a drain-cock leading from the muddy-waterchamber.

5. In a filter, a cylindrical case open at one end, there being aninternal annular groove at the open end of said case and entrances tosaid groove, a cap-plate adapted to close the end of said case, a gasketagainst the lower face of the cap-plate, a flange extending from saidgasket, a filtering-body against said gas,

ket and within said flange, and lugs extending from said cap-plate toengagel in said groove and pass in and out through the said entrances,asupply-pipe communicating with the muddy-water chamber and a drain-cockleading from the muddy-water chamber, said ltering-body being hollow andthere being a discharge-opening from the filtering-body through thecap-plate.

6. In a filter, a case open at one end, a capplate, a filtering-bodyhaving a central bore, a rod'loosely hinged to said cap-plate andextending through said bore, means at the lower end of said rod forclosing said bore, a compressible gasket at the upper end of saidfiltering-body, and means of suspending the filtering-bodyin the case,substantially as specifled.

ISAAC N. SPEER.

lVitnesses:

SARA MILLER, SEMER G. WELLS.

IOO

